Cited by 54Ion Channels and ReceptorsCalcium signaling and nucleotide metabolismIon channel regulation and function

The Regulation of a Cell’s Ca2+ Signaling Toolkit: The Ca2+ Homeostasome

Schwaller, Beat·2012·Advances in Experimental Medicine and Biology

Abstract

The Ca(2+) ion serves as a ubiquitous second messenger in eukaryotic cells and changes in the intracellular Ca(2+) concentration regulate many responses within a cell, but also communication between cells. In order to make use of such an apparently simple signal, i.e. a change in the intracellular Ca(2+) concentration, cells are equipped with sophisticated machinery to precisely regulate the shape (amplitude, duration) of Ca(2+) signals in a localization-specific manner. To ascertain such a precise regulation, cells rely on the components of the Ca(2+) signaling toolkit. This embraces Ca(2+) entry systems including Ca(2+) channels in the plasma membrane and organellar membranes, and Ca(2+) extrusion/uptake systems including Ca(2+)-ATPases (Ca(2+) pumps) and Na(+)/Ca(2+) exchangers. Besides mitochondria, organelles implicated also in Ca(2+) signaling, cytosolic Ca(2+) buffers are cell-specific subtle modulators of Ca(2+) signals. The Ca(2+)-signaling components not only orchestrate their activity as to ascertain the high accuracy of intracellular Ca(2+) signaling, but they are also implicated in the regulation of their own expression. The total of the molecules that build the network of Ca(2+) signaling components, and that are involved in their own regulation as to maintain physiological Ca(2+) homeostasis resulting in phenotypic stability is named the Ca(2+) homeostasome. Mechanistic details on the functioning of the Ca(2+) homeostasome are presented.

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Crossref · 10.1007/978-94-007-2888-2_1

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Authors
Schwaller, B.
Affiliations
University of Fribourg (CH)
Corresponding author
Schwaller, Beat
Venue
Advances in Experimental Medicine and Biology
Published
2012
Volume
740
Pages
1-25
ISSN
0065-2598 (ISSN-L)
OpenAlex
W104189985
Cited by
54
References
94
Citations by year
2026: 1 · 2025: 2 · 2024: 1 · 2023: 1 · 2022: 2 · 2021: 2 · 2020: 8 · 2019: 6 · 2018: 3 · 2017: 6 · 2016: 2 · 2015: 7 · 2014: 7 · 2013: 4 · 2012: 1
FWCI
11.68
Type
book chapter
Language
en
Open access
closed
Locations
  • Advances in experimental medicine and biology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Sensory Systems › Ion Channels and Receptors
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Physiology › Calcium signaling and nucleotide metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ion channel regulation and function
Keywords
intracellular calcium signaling, calcium homeostasis, calcium channels, calcium pump, Na+/Ca2+ exchanger, mitochondria, second messengers
MeSH terms
Animals, Calcium, Cell Membrane, Cytosol, Homeostasis, Humans, Calcium Signaling

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